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Grassi Libra astronomica ac philosophica F.jpeg Book Grassi Orazio Libra astronomica ac philosophica ex Typographia Marci Naccarini Perusiae lat it Libra astronomica ac philosophica qua Galilaei Galilaei opiniones de cometis Mario Guiducio in Florentina Academia expositae atque in lucem nuper editae examinantur Lothario Sarsio